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Add unit test for capstone-engine#1839
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import unittest | ||
from capstone import * | ||
from capstone.arm64 import * | ||
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class SubRegTest(unittest.TestCase): | ||
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PATTERNS = [ | ||
("41 00 40 F9", "ldr x1, [x2]"), | ||
("41 00 40 39", "ldrb w1, [x2]"), | ||
("41 00 C0 39", "ldrsb w1, [x2]"), | ||
("41 00 40 79", "ldrh w1, [x2]"), | ||
("88 c2 bf f8", "ldapr x8, [x20]"), | ||
] | ||
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def setUp(self): | ||
self.insts = [] | ||
self.cs = Cs(CS_ARCH_ARM64, CS_MODE_LITTLE_ENDIAN) | ||
self.cs.detail = True | ||
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for pattern, asm in self.PATTERNS: | ||
l = list(self.cs.disasm(bytes.fromhex(pattern), 0)) | ||
self.assertTrue(len(l) == 1) | ||
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_, expected_reg_written, expected_reg_read = asm.split() | ||
# strip comma and [] | ||
expected_reg_written = expected_reg_written[:-1] | ||
expected_reg_read = expected_reg_read[1:-1] | ||
expected_regs = [expected_reg_read, expected_reg_written] | ||
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self.insts.append((l[0], asm, expected_regs)) | ||
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def test_registers(self): | ||
"""Check that the `regs_access` API provides correct data""" | ||
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for inst, asm, expected_regs in self.insts: | ||
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# Check that the instruction writes the first register operand and reads the second | ||
for i, decoded_regs in enumerate(map(lambda l: list(map(self.cs.reg_name, l)), inst.regs_access())): | ||
self.assertEqual(len(decoded_regs), 1, "%s has %d %s registers instead of 1" % (asm, len(decoded_regs), ["read", "written"][i])) | ||
decoded_reg = decoded_regs[0] | ||
self.assertEqual(expected_regs[i], decoded_reg, "%s test"%i) | ||
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def test_operands(self): | ||
"""Check that the `operands` API provides correct data""" | ||
for inst, asm, expected_regs in self.insts: | ||
ops = inst.operands | ||
self.assertEqual(len(ops), 2) | ||
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self.assertEqual(ops[0].type, CS_OP_REG, "%s has operand 0 with invalid type" % asm) | ||
self.assertEqual(ops[0].access, CS_AC_WRITE, "%s has operand 0 with invalid access" % asm) | ||
self.assertEqual(ops[1].type, CS_OP_MEM, "%s has operand 0 with invalid type" % asm) | ||
self.assertEqual(self.cs.reg_name(ops[1].mem.base), expected_regs[0], "%s has operand 1 with invalid reg" % asm) | ||
self.assertEqual(ops[1].access, CS_AC_READ, "%s has operand 1 with invalid access" % asm) | ||
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if __name__ == '__main__': | ||
unittest.main() |